Table 1.

The relationship between CTC-positive rate and clinicopathological characteristics

Variations	Number (%)	No of patients		P
		CTC-positive CTC-negative
Gender
Male	16	13	3	0.280
Female	9	9	0
Age
<60	8	7	1	1.000
≥60	17	15	2
Tumor stage
I-II	13	12	1	0.593
III-IV	12	10	2
Tumor size
T1-T2	9	8	1	1.000
T3-T4	16	14	2
Lymph nodes
N0	8	8	0	0.527
N1	17	14	3
Metastasis
M0	19	18	1	0.133
M1	6	4	2
CA19-9
<200 U/ml	12	11	1	1.000
≥200 U/ml	13	11	2